docs: def ls(ctx, name, list_instances):
      """List ELB instances"""
      session = create_session(ctx.obj['AWS_PROFILE_NAME'])
  
      client = session.client('elb')
      inst = {'LoadBalancerDescriptions': []}
      if name == '*':
          inst = client.describe_load_balancers()
      else:
          try:
              inst = client.describe_load_balancers(LoadBalancerNames=[name])
          except ClientError as e:
              click.echo(e, err=True)
  
      for i in inst['LoadBalancerDescriptions']:
          click.echo(i['LoadBalancerName'])
          if list_instances:
              for ec2 in i['Instances']:
                  health = client.describe_instance_health(
                      LoadBalancerName=name,
                      Instances=[ec2]
                  )
                  click.echo('{0}\t{1}'.format(ec2['InstanceId'], health['InstanceStates'][0]['State']))